摘要:
A particle separator module and a heat exchange chamber module connectable to a circulating fluidized bed boiler. The particle separator module includes 2N vertically aligned steam tubes, N being an integer greater than one. Each of the vertically aligned steam tubes is attached to a boiler upper portion and extends downwards to a predetermined level. Each of the 2N vertically aligned steam tubes is attached to one of N first beams. Each of the N first beams is suspended to hang in a horizontal position at the predetermined level by two adjacent steam tubes of the 2N vertically aligned steam tubes. N second beams are attached in a horizontal position to the top surface of the heat exchange chamber module, which is arranged to be suspended from the particle separator module by having each of the N second beams suspended by two adjacent beams of the N first beams.
摘要:
The invention relates to a method and a device for utilizing the heat of flue gases from combustion apparatus while simultaneously removing condensable elements from the flue gases and reducing the corrosivity of the flue gases. The method is applicable to all types of combustion apparatus where a combustion zone generates hot flue gases that are cooled in one or more heat exchangers that transfer the utilizable heat to a liquid or a gas. The method is also suitable for apparatus with considerable load fluctuations, where the fuel supply must be adjusted to the heat load. This is achieved by separating the flue gases from the heat exchangers by cooling the flue gases by means of a particulate material (2, 13) which absorbs the condensable substances, and by circulating the particulate material between the flue gases and heat exchangers (10) that transfer heat to the hot liquid or gas.
摘要:
A method of recovering heat from bottom ash that is discharged from a combustion process in a furnace. Fuel and combustion air are fed into a furnace for combusting the fuel in order to generate heat energy to produce at least one of steam and hot water in a boiler arrangement, in which flue gases and bottom ash are generated. The bottom ash is discharged from the furnace. Heat is recovered from the flue gases. Heat is also recovered to a bottom ash cooling circuit from the bottom ash discharged from the furnace in order to utilize the recovered heat for preheating the combustion air in a heat exchanger. The heat exchanger is arranged in a combustion air heating circuit. Heat is exchanged from the bottom ash cooling circuit to the combustion air heating circuit.
摘要:
A device for storing and releasing heat energy for an electrical power production plant is described. The device has: at least one bed of fluidisable particles, arranged at least partly at receiving surfaces for such radiation; means for feeding a fluidisation gas for the fluidisation of said particles; and heat exchange elements flown through, in use, by an operating fluid and arranged at or in proximity of said bed of fluidisable particles.
摘要:
Device for dry cooling of coke with a pre-chamber and arranged thereunder a cooling chamber, and with connections for the cooling gas inlet and outlet pipes. The invention is characterized in that the cooling chamber (32) and pre-chamber (31) both have a rectangular and roughly equal-sized cross-section and the transmission opening (34) is designed as a rectangular opening extending at least over the total length of the cooling chamber (32) or pre-chamber (31), and in that at the upper end of the cooling chamber (32) are located the outlet pipes (36) for the cooling gas, extending laterally over the entire length.
摘要:
The invention relates to a recovery boiler comprising a set of black liquor feed pipes in the first combustion zone (I), and primary air nozzles below the set of black liquor feed pipes. The recovery boiler comprises an air feed channel above at least part of the length of at least one black liquor feed pipe for supplying combustion air for volatile matter into the first combustion zone (I) along with the black liquor supply in the direction of the length of the at least one black liquor feed pipe. The present invention further relates to fuel feeding means for a recovery boiler and a method for feeding black liquor and air to a recovery boiler to reduce nitrogen oxide emissions.
摘要:
A device for storing and releasing heat energy for an electrical power production plant is described. The device has: at least one bed of fluidisable particles, arranged at least partly at receiving surfaces for such radiation; means for feeding a fluidisation gas for the fluidisation of said particles; and heat exchange elements flown through, in use, by an operating fluid and arranged at or in proximity of said bed of fluidisable particles.